Lock-casing



E. G. GODSHALK.

' LOCK CASING.

APPLICATION 'FILED JUNE 25, I920.

Patented June 21, 1921.

UNITED STATES PATENT OFFICE.

ELMER G. GGDSHALK, OF BLACKJTELL, OKLAHOMA.

LOCK-CASING.

Application filed June 25,

To aZZ whom it may concern:

Be it known that I, ELMER G. GonsHALK, a citizen of the United States of America, and resident of Blackwell, in the county of Kay and State of Oklahoma, have invented certain new and useful Improvements in Lock-Casings, of which the following is a specification.

This invention relates to looks and more particularly to casings and shackles of padlocks; the said invention having for its object the production of a lock casing of curved contour which has been found admirably adapted for lending strength and durability to a casing of this character, preventing crushing unless abnormal pressure is applied, obviating joints and corners which might prove to be points of attack for hammering the lock casing or for the application of a pointed or sharp tool which might be used in prying parts of a lock apart.

By reason of the fact that there are curved surfaces at practically all points of the lock casing, the hammer will glance from the sur-' face of the casing and effective blows cannot be given for the purpose of parting the joints or seams or otherwise injuring the look.

A still further object of this invention is to produce a lock casing, the metal of which is a specially selected alloy steel suitable for case hardening and of such a chemical composition that after annealing, case hardening and multiple heat treating, it will combine maximum hardness of the outer case which will resist the action of files, Chisels, hack saws, drills, clippers or other mechanical cutting or boring instruments, with a soft inner core to produce a toughness which will prevent fracture of the casing.

Furthermore, an object of this invention is to produce a lock casing of the character indicated which will readily shed water so that with the use of a non-rusting metal alloy rusting of the casing will be obviated and destruction of the casing by hammer blows or the like will be improbable.

" A still further object of this invention is to produce a lock casing having welded seams, case hardened or so treated as to be proof against attack by cutting tools and furthermore in providing novel means for coupling the locking mechanism or for 1nstalling the locking mechanism within the casing by rivets or pins welded in the sec- Specification of Letters Patent. Patented J 21 1921 1920. Serial No. 391,654.

tions of the casing and so treated at the outer ends as to present tool resisting surfaces equal in eficiency to the surface of the Said casings.

A still further object of this invention is to produce a lock casing comprising sections having rivet or bolt apertures with recesses at the said apertures forming housings for the ends of the rivets which may be upset or headed, the heads conforming to the contour of the recesses and lying within the said recesses so that they are inaccessible to tools or the-like, which might be used for impairing the utility of the said rivets.

A still further object of this invention is to produce a novel shackle and shackle connections with the said housing and the said invention possesses other objects as will hereinafter appear.

lVith the said object in View, the invention consists in the idea and methods'of producing a lock which cannot be destroyed by the ordinary means explained before, whoseinternal mechanism is acid and rust proof and in the arrangement of the construction, form and combination of parts to be hereinafter more fully set forth and claimed.

In describing the invention in detail, reference will be had to the accompanying drawings forming part of this specification wherein like characters denote correspond ing parts in the several views, and in which- *igure 1, illustrates a View in side elevation of a lock casing and shackle;

Fig. 2, illustrates a section on the line 2-2 of Fig. 1;

Fig. 3, illustrates a view in elevation of a casing having a slightly modified configuration;

Fig. 41 illustrates a section on the line 4- of Fig. 3;

Fig. 5 illustrates a view in elevation of a lock embodying a further modification;

Fig. 6 illustrates an edge view thereof;

Fi 7 illustrates a sectional view on the line a l of Fig. 5;

Fig. 8 illustrates a sectional View on the line88 of Fig. 5; and

Fig. 9 illustrates a sectional View of a fragment of a lock casing showing a shackle of modified construction applied thereto.

In these drawings 10 and 11 denote the sides of a lock casing which are semi-elliptical in an unbroken curve, the said sections having a joint 12 formed by welding to produce a continuous unbroken surface of the joint, it being understood that the said casing and the metal or the joint are treated by knownprocesses to harden the metal to make them proof against the action of cuttingimplements. The said sections 10 and 11 have apertures such as 13 for the reception of rivets 1 1, the said rivets having their ends welded into the casing and having the welded ends shaped to the contour of the outer surface of the casing and the material of said rivets being or the same kind as that of the casing and being case hardened so that they will present surfaces which cannot be attacked by cutting instruments. The key socket or through the casing and is likewise case hardened or treated to resist the action or" cutting tools, the said casing being intended, of course, to house any suitable locking mechanism.

As the details of construction of the locking mechanism are immaterial aside from the special materials they are being. made of,

they are omitted from the showing or this invention. It is to be understood, however, that the locking mechanism shall be of such material as to withstand heat incident to the treatment of the lock casing forhardening 'it. without causing deterioration of the material or the spring action of the springs or the like while undergoing such treatment. The shackle16 is fitted into the top of the lock casing so that there is no space or joint between the shackle and the wall of the aperture in which the shackle fits which would permit the entrance of a chisel or boring tool intended to injure the look as will presently. appear.

In Fig. 3, the lock casing comprises the sections 17 and 18 which have a central curved portion terminating in'rims or edges similar to 19, there being apertures to receive the rivets which are welded into the casing. The sections 17 and 18 are secured together at the joint 21 by the weld ng or other process which will result in a jointless product the same as the casing shown in Fig. 2. In fact, the only difference between the two casings so far described is that they are of slightly different configuration in cross section.

The lock casing shown in Figs. 5, 6, 7 and 8 comprises the curved sections 22 and 23 adapted to be fitted together, each of the said sections having aplurality of apertures such as 24:, the apertures of the two sections alining so that rivets such as 25 may be appliedto the apertures for holding the. sections together. As shown in the drawings, the outer surfaces of the sections have recesses such as. 26 with which the apertures merge and the rivets 25 have oval shaped heads 27 of a side which conforms to the area of the recesses into which they are fitted, so that there are no spaces between the bushing 15 extends walls of the recesses and the heads of the rivets for inserting a tool for injurious pure oses.

The shackle pintle or pivot 28 has heads such as 29 fitted in recesses 30 at the sides of the lock casing at the top thereof and the shackle 31 has its butt end 32 fitted closely into a seat 33 formed in the top of the casing, the joint between the said shackle and the said casing being such as to prevent access of pointed tools or the like.

It is the intention of the inventor that the casing shown in Figs. 5 and Sinclusive shall be formed of the same material as that heretofore described, which material is case hardened with a tough and soft inner core which will not break under impact.

The locking mechanism can of course be of any of the usual types for use in this or any of the described form and the inventor does not wish to be limited to the details of 37 and each end of the shacklein order to produce an efiicient and satisfactory securing action.

As heretofore stated, the internal mechanism ofthe' lock possesses certain character istics and to that end it might be stated that the tumblers, levers and other moving parts I of the lock, with the exception of the springs, are to be made of a special alloy metal which is not affected in any way by case hardening temperatures or case hardening mate rials to which the parts of the lock are to be subjected or come in contact. In addition, the special alloy metal is to be acid proof in the highest degree and will not rust. Due to this feature a lock can be exposed to the action of water without atfecting the operation of its parts. i

l I claim:

1. A lock easing comprising curved members having welded joints, rivets extending through the said sections and having theirv outer surfaces shaped to the contour of the outer surfaces of the sections of the casing, and having their ends welded into the casing, a key barrel bushing extending through the said sections, the said casing and its welded seams, welded rivets, key barrel bushing and shackle being hardened as and for the purpose described.

2. A lookcasing comprising sections With curved outer surfaces having welded joints,

rivets having heads shaped to the contour oi the outer surface of the casing and flush therewith and said rivets having their ends Welded into the casing, the said casing having shackle openings and a shackle Whose ends conform to the contour of and fill the paces occupied by the shackle, the casing, seams, rivets and shackle being case hardened.

3. A lock casing comprising sections having apertures and external recesses at the said apertures forming seats, rivets in said apertures for connecting the said sections, said rivets having heads conforming to the contour and area of the said recesses, the said casing having shackle openings and apertures for the shackle pivot with recess-es with which the apertures of the shackle pivot merge, a shackle fitted in the opening, a pivot for the shackle extending through the apertures of the casing and through the shackle, and heads on the shackle pivot lying in the recesses and having the contour of the recesses, the casing, shackle, pivots and rivets being case hardened.

4. A lock casing comprising side sections having convexed outer surfaces, the edges of said sections abutting, and means for securing the sections together.

5. A look easing comprising curved members having Welded joints, rivets extending through the said sections and having their outer surfaces shaped to the contour of the outer surfaces of the sections of the casing and their ends Welded into the case, a key barrel bushing extending through the said sections, said casing, rivets, shackle and key barrel being formed of an alloy steel With their outer surfaces case hardened.

6. A lock casing comprising sections having apertures and external recesses at the said apertures forming seats, rivets in the said apertures for connecting the said sections, said rivets having heads conforming to the contour and area of the said recesses, the said casing having shackle openings and apertures for the shackle pivot with recesses with which the apertures of the shackle pivot merge, a shackle fitted in the opening, a pivot for the shackle extending through the apertures of the casing and through the shackle, heads on the shackle pivot lying in the recesses and having the contour of the recesses, said casing, shackle, pivots, rivets, and key bushing being formed of alloy steel with the outer surfaces of all.

the mentioned parts case hardened.

ELMER Gr. GODSHALK. 

